Variant of NAICS 2012 - Energy sector
331 - Primary metal manufacturing
This subsector comprises establishments primarily engaged in smelting and refining ferrous and non-ferrous metals from ore, pig or scrap in blast or electric furnaces. Metal alloys are made with the introduction of other chemical elements. The output of smelting and refining, usually in ingot form, is used in rolling and drawing operations to produce sheet, strip, bars, rods and wire, and in molten form to produce castings and other basic metal products.
|3311Iron and steel mills and ferro-alloy manufacturing||Iron and steel mills and ferro-alloy manufacturing|
|3312Steel product manufacturing from purchased steel||Steel product manufacturing from purchased steel|
|3313Alumina and aluminum production and processing||Alumina and aluminum production and processing|
|3314Non-ferrous metal (except aluminum) production and processing||Non-ferrous metal (except aluminum) production and processing|